Method of air conditioning



July 19, 1938.

w. FLEISHER METHOD OF AIR CONDITIONING 2 Sheets-Sheet Filed April 1, 1935 v INVENTOR. H/ALTEQ L. FZE/sHEQ, By W @6776 ATTORNEY:

1 July 1 9, 1938.

w. L. FLEISHER METHOD OF AIR CONDITIONING Filed April 1, i955 ZSheetS-Sheet 2 INVENTOR.

MHz/2 L FLEISHEE/ ATTORNEY.

Patented Jul 19,1938 I 7 2,124,251

UNITED STATES PATIENT OFFICE -2,124,291 A METHOD or AIR- CONDITIONING Walter L. Fleislier, New York, N. Y. Application April 1, 1935, Serial No. 14,067

3 Claims. (01. 257-4) This application is a continuation, in part, of of the casing, whereas coil 5 extends two-thirds my copending application Serial No. 751,684, filed across the casing, and coil! extends only one- November 6, 1934, and which issued into Patent third across. The three coils are supplied with No. 2,105,882, Jan. 18, 1938. refrigerant or refrigerated medium from a suit- 5 The general object of the invention is to proable source through supply pipe 1, the medium 5 vide a heat exchanger coil arrangement for use in being returned to the refrigerating equipment an air conditioning system which will enable a through return linear As shown in Fig. 1, coils volume of air to be properly dehumidified under, 4, 5 and 6 are arranged in parallel withrespect summer conditions without producing a final dry to lines I and a. Hence, the coils are all supplied 10 bulb temperature and relative humidity too exwith medium at the same temperature. 10 treme for human comfort.v However, air in the stratum l9 indicated by the Another object is to provide'a heat exchanger arrows in Fig; 1, will pass through the three coils, arrangement which will enable all air employed whereas air in stratum 20 will pa s through tWO in an air conditioning system to pass through the coils, and air in the stratum 2| will only pass in i5 exchanger and emerge in a proper and predecontact with' coil 6. As a result, different air termined condition without the use of mechanical volumes will be conditioned to difierent degrees reh ater and form a final mixture at a median tempera- Another feature covers the use of a cooling coil ture and relative humidity, suitable for introducin a series arrangement in which difierent section into an area to be conditioned.

0 tions of the coil, crosswise of a casing, assume In Fig. 2, coils t, 5 and 6 are positioned in casdifferent temperatures, the same conditioning ing in in like manner as n Fig. 1, except that. medium flowing through all sections, they are arranged in series with respect to lines A further feature covers the use of a cooling 1 and 8. Thus, the medium in coil 5 will be at a coil in which different sections of the coil, both different temperature, Wa t a that of coil lengthwise and crosswise of a casing, assume 4, nder summer operating conditions; and the 25 different temperatures, the same conditioning edium in coil 6 will be still warmer. The air medium flowing through all sections. flows through the casing in the direction of the I These and other objects and features will be arrows and whereas the whole stream will contact more apparent from the following description of w 0011 37 two-thirds w t ct w th coils illustrative forms of applicant's exchanger ar- 5 and 6 and only One-third with all ee 0 1 8- 30 rangements, to be read in connection with the Applicant thus combines the counter-110W P accompanying diagrammatic drawings, in which: p e of heat exchange With his arrangement Fig. 1 is a perspective view illustrating diacoils extended different distances across a congrammatically a cooling coil arrangement in a d t o r. I conditioning casing in which a plurality of coils, In Fig. 3, the arrangement of coils radically 35 extending to different degrees crosswise of the p ts from t 0 Flgs- 1 d a d ut i e casing, are arranged in parallel arrangement with a plurality of coils arranged to form coil sections respect to new of conditionin m di m t a d of difierentthicknesses in difierent cross-sectionfrom the coils; a1 portions of the casing. The piping arrange- 40 Fig- 2 is a diagrammatic view in perspective ment, while in series, first traverses a series of 40 of a modified arrangement of the coil in Fig, 1, coils serving one stratum of an air stream, then in which the coils are in series with respect to traverses the Series Serving the adjacent um, flow of conditioning mediumxto and from the and 80 While 81X 60115 are wn, a y numcoils; and t ber, both lengthwise and crosswise may be .ar- 4 Fig. 3 is a diagrammatic View in perspective of ran ed. t a ry t t v nt n. In Fig. 3, t another modified coil arrangement. medium supplied through line I first flows Considering the drawings, similar numbers rethrough coils I2, i3 and M in series, counter to ferring to similar parts, numeral Ill designates a the flow of air through the casing, then flows casing through which air from any desired source through middle coils it andit, and finally,

or sources flows impelled therethrough by a fan, through coils ll before discharging into return 50 not shown. Cooling coils 4, 5 and 6, in Fig. 1, line 8. As a result, the three coils serving stratum are positioned crosswise of the casing. The coils 22 are each at a difierent temperature, and the may all be of the same or varying dimensions in two coils serving stratum 23 are at difi erent temdiameterv and character of radiating extended peratures with respect to the first three coils, and

surfaces. Coil 6 extends across the whole width also, with respect to each other and the coil I1 55 serving stratum 24 is at still a diflerent temperature. A maximum heat exchange between conditioning medium and air stream to achieve a dehumidified condition but at a relatively comfortable dry bulb temperature and relative humidity is thereby brought about.

'It is apparent thatthe arrangement of coils, lengthwise and crosswise of a casing, and in thickness, to different extent, and in combinations of series and parallel arrangements to suit varying requirements, is within the purview of this invention.

In the above description and in the accompan-ying claims, the expression lengthwise of the easing" shall be understood to refer to distance through the casing measured parallel to air flow therethrough; the expression crosswise oi the casing shall be understood to relate to distances change relation with the'flrst portion of the air stream, the second portion of theair stream and a third portion of the air stream.

2. A method of conditioning air which consists, first, in passing conditioning medium in heat exchange relation with a first portion of an air stream, then in heat exchange relation with a second portion of an air stream and the first portion of the air stream and then in heat exchange relation with the first portion of the air stream, the second portion of the air stream and a third portion of the air stream, the conditioning medium being passed in counter current heat exchange relation with the air stream.

3. The method of controlling the moisture content and temperature oi. air which consists in directing a stream of air through a passageway, passing one portion of said air stream in indirect heat exchange relation with a relatively large volume of conditioning medium, passing another portion 01 said air stream in indirect heat exchange relation with a smaller volume-of conditioning medium which has been in heat exchange relation with said first-mentioned portion of the air stream, and passing a third portion of the air stream in indirect heat exchange relation with conditioning medium which has been in heat exchange relation with said first-mentioned and second-mentioned portions of said air stream.

\ WALTER L. FLEISHER. 

